Volkswagen Transporter T30 ST-Line TDI Sa (2021)

Estimated running costs and MOT pass rates from 277 MOT tests in 2024.

Annual Cost

£2,002

£167/month

MOT Pass Rate

86%

Good

Road Tax

£200

Standard rate/year

Est. Insurance

n/a

1968cc Diesel

Solid Option

86% pass rate, £2,002/year to run. Close to the average across all models.

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Diesel1968cc5 years old277 tests45k miles avg

Annual Running Costs

Fuel (Diesel, 1968cc)

~48 mpg

£1,397

Road Tax

Car rate estimate; vans are taxed differently

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£2,002

Per month£167/mo

Per week£39/wk

Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).

Reliability Verdict

86% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.

86% of MOT tests on Volkswagen Transporter T30 ST-Line TDI Sas from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 277 tests across the UK, retests included. The average mileage recorded at those tests was 44,871 miles.

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How Does It Compare?

Rank among 2021 models3013th of 3,336(bottom 10%)

Rank among Volkswagen models607th of 1,086(bottom half)

vs average of all models+4%(82% avg)

vs 2021 models average-6%(92% avg)

vs Volkswagen average+1%(85% avg)

Mileage Analysis

44,871

Average miles

22,200

Expected for age

The average 2021 Volkswagen Transporter T30 ST-Line TDI Sa had 44,871 miles on the clock at its 2024 MOT, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

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Best Year to Buy?

Of the years with at least 100 tests, the 2020 model has the highest MOT pass rate at 87%, while the 2021 model has the lowest at 86%. Consider a different year if reliability is a priority. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

Volkswagen Transporter T30 ST-Line TDI Sa by Year

Year	Pass Rate	Tests	Avg Mileage
2021	86%	277	44,871 mi
2020	87%	150	56,965 mi
2019	88%	52	62,910 mi

Similar Cars to Consider

Ford Transit Custom

2019 · 2000cc Diesel

£2,002/year

87%

+1%

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About the 2021 Volkswagen Transporter T30 ST-Line TDI Sa

The 2021 Volkswagen Transporter T30 ST-Line TDI Sa is a van. Our records list a 1968cc diesel engine, though engines vary between versions. 277 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 10% of 2021 models for MOT pass rate.

With an average of 44,871 miles recorded at its 2024 MOT tests, Volkswagen Transporter T30 ST-Line TDI Sa owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2021 Volkswagen Transporter T30 ST-Line TDI Sa Fuel Costs

The 1968cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2021 Volkswagen Transporter T30 ST-Line TDI Sa?

Total estimated annual running cost is £2,002 (£167/month), broken down as £1,397 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 86% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 2021 Volkswagen Transporter T30 ST-Line TDI Sa

At 5 years old, the Volkswagen Transporter T30 ST-Line TDI Sa offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Medium risk

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Low risk

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2021 Volkswagen Transporter T30 ST-Line TDI Sa stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Volkswagen Transporter T30 ST-Line TDI Sa(2021)	86%	£1,397	£200	n/a	£2,002
Ford Transit Custom(2019)	87%	£1,397	£200	n/a	£2,002same

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2021 Volkswagen Transporter T30 ST-Line TDI Sa

Is the 2021 Volkswagen Transporter T30 ST-Line TDI Sa reliable?

Good reliability. Occasional issues but generally solid. 86% of MOT tests on 2021 Volkswagen Transporter T30 ST-Line TDI Sas ended in a pass, from 277 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points above the average of 82% across all models in the same data.

How much does a 2021 Volkswagen Transporter T30 ST-Line TDI Sa cost to run?

Our estimate is £2,002 a year (£167 a month): £1,397 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2021 Volkswagen Transporter T30 ST-Line TDI Sa?

86% of 277 MOT tests on the 2021 Volkswagen Transporter T30 ST-Line TDI Sa ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 3013th of 3,336 models first registered in 2021 (bottom 10%).

Which year Volkswagen Transporter T30 ST-Line TDI Sa has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Volkswagen Transporter T30 ST-Line TDI Sa has the highest MOT pass rate at 87% and the 2021 the lowest at 86%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2021 Volkswagen Transporter T30 ST-Line TDI Sa?

The average mileage recorded at MOT tests on the 2021 Volkswagen Transporter T30 ST-Line TDI Sa is 44,871 miles, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.